Core for rolis of paper and the like



H. PARKER CORE FOR ROLLS OF PAPER AND THE LIKE.

APPLICATION FILED MAR 25,1918

1,397,542, Patented 22, 1921..

1N1 'EN TOR.

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**' ATTORNEY.

UNITED STATES PATENT OFFICE.

HOWARD PARKER, OF BERLIN, NEW HAMPSHIRE, ASSIGNOR T0 BROWN COMPANY, 01*

PORTLAND, MAINE, A CGBPORATION 0F MAINE.

eonora.

Specification of Letters fate-at.

Patented N ov. 22, 1921.

Application filed March 25, 1918. Serial No. 224,412.

To all whom it may concern.

.Be it known that I, HOWARD PARKER, a citizen of the United States, and a resident of Berlin, county of Coos, State of New Hampshire, have invented certain new and useful Improvements in a Core for Rolls of Paper and the like, of which the following is a specification.

This invention relates to tubular cores upon which material such as paper can be conveniently wound into rolls. It has especial reference to a reinforcement used at the ends of a core made from pulp stock.

The object of the invention is to provide a strong reinforcement at the points of greatest wear, 2'. 6., the ends of the core, and to securely hold them in position.

Referring to the drawings- Figure 1 is a perspective view of an end portion of a complete core.

Fig. 2 is a perspective view of the reinforcing sleeve.

Fig. 3 is a central sectional View of one end of a core showi g reinforcement applied thereto.

Referring to the drawings-a denotes the core proper which is made by winding a continuous sheet of pulp onto a mandrel until a wall of sufficient thickness has been built up, after which the tube is removed from the mandrel and thoroughly dried. 6 denotes a notch in the end of the core to receive a driving dog for the purpose of turning the core either in the winding or unwinding operation. 0 denotes generally a reinforcing bushing fitted to both ends of the core to strengthen the ends so that they cannot be broken down in shipping or handling.

Owing to the fact that there is some variation in the inner diameter of these cores due to uneven shrinkage in the drying operation, the bushing is split as at 5, and its outer end is flanged over as at 6, to protect,

the ends of the core. The bushing is also cut away opposite the notch in the core, and suiilcient metal is left to provide what may be termed radial fianges'7, which may be folded over the sides of the notch to provide a. metallic wearing surface for the driving dog. The edges of these radial flanges are serrated as at 8, so that they may be turned back and driven intothe core to lock the bushing in place. In the wall of the bushing, preferably opposite the notch, a prong 10 is formed which projects out from the bushing toward the flanged end thereof and is intended to be driven into the core when the bushing is in place to assist in holding the bushing from accidentally slipping out the end of the core. Preferably this prong is made integrally with the bushing by making a V-sha-pe or U-shape cut through its wall and then bending the point out. It is essential that means, such as the serrated teeth at the ends of the additional prong, be provided to make certain that the bushing shall not be disengaged if the core during shipment is either with or without paper wound thereon.

In accordance with the provisions of the patent statutes I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

I claim as my invention v A core of the class described comprisin in combination with a tube/having one on thereof provided with a notch, a normally expanded, split, contractible, protecting bushing of springy sheet metal fitted in the the radial flanges, and

end of said tube, said bushing having oppoend of said tube, and an outwardly proIiect- I ing prong from the wall of said bus ling adapted for engagement with the inner wall of said core.

- HOWARD PARKER. Witnesses:

E. F. BAILEY, E. E. PIERCE. 

